21543416

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{523}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 42758400

約数和(自身を除く): 21214984

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 271, 523, 542, 1046, 1084, 2092, 2168, 4184, 5149, 9937, 10298, 19874, 20596, 39748, 41192, 79496, 141733, 283466, 566932, 1133864, 2692927, 5385854, 10771708, 21543416]

約数ペア:

[(1, 21543416), (2, 10771708), (4, 5385854), (8, 2692927), (19, 1133864), (38, 566932), (76, 283466), (152, 141733), (271, 79496), (523, 41192), (542, 39748), (1046, 20596), (1084, 19874), (2092, 10298), (2168, 9937), (4184, 5149)]